I poise a question.

[Godlesspanther]

Logically, God cannot be anything but good; he can't violate his own existence.

The question you raised self-implodes on it self, because the context is invalid. Its like asking what happens when an unstoppable force hits an immovable object.

Its like saying "God is all powerful and can do anything in existence, including not be ". God is bound by reality, just as we are. God cannot violate his own character or he would cease to be God. If God was "lying", such as us men do, then he couldn't be the standard for perfection and the absolute reference point for reality, as his infinite perfection would become finite an limited, and hence... not God.

God cannot be actually and wholly Evil. Evil cannot exist on its own, it can only exist as an aberration of good. This is actually the portrait scripture paints of Satan, who was once good but through his own freewill became corrupted and is called "the father of lies".

I don't get how it must logically follow that god can't be anything but good. Why is that and why does it logically follow that god must be good?

Logically -- say there is a god -- logically god can't be anything but indifferent to our suffering, happiness, or anything else.